Window-lock.



UNITED STATES PATENT OEEIcE.

Patented May 10, 1904.

WINDOW-LOCK.

SPECIFICATION forming part of Letters Patent No. 759,384, dated May 10, 1904.

, Application filed November 20, 1903. Serial No. 181,986. (No model.)

Tomi/Z whom it may concern:

Be it known that we, THoMAs H. LANDERS and WILLIAM N. JACKSON, citizens of the United States, residing at Carrollton, in the county of Carroll and State of Georgia, have invented a new and useful Window-Lock, of which the following is a specification.

This invention relates to window-fasteners; and the primary object thereof is to provide a novel and efiective means for preventingthe movement of one member of the window relative to the other.

A further object is to provide improved means for holding one of the locking members in place.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims, it being understood that changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

In the drawings, Figure 1 is aview in front elevation showing the several parts of our invention. Fig. 2 is an edge view of the several parts, and Fig. 3 is a detailed perspective view of the sliding look.

In the preferred embodiment of our invention as illustrated in the accompanying drawings, 1 represents the frame, and 2 the sash, slidable therein. On one side of the frame is shown a rack 3, although both sides may be provided with a rack, if desired.

A designates a rotary gear-Wheel mounted on the sash and held in place by a sliding locking device having means to engage the gear so as to prevent its rotation, the locking device serving also as a guard. for the rotary gear-wheel and relieving the screwll, upon which the wheel is mounted, of some of the strain thereon. This locking device is provided with an arched intermediate portion 5 and slotted alining terminals 6 and 7 offset from the intermediate portion 5 by the rightangular bends 8 and 9. The arched intermediate portionextends over the gear and is slotted at 10 for the insertion of a screw 11,

which passes through the slot and through acentral opening in the gear, so that said screw serves a dual purpose namely, as a fastening device for the locking member and a hearing for the gear. The terminal slots in the locking device are also provided for the reception of fastening devices, which extend into the sash and hold the lock in engagement therewith. A terminally projecting extension 12, disposed at a right angle to the looking device, acts as a handle to be grasped by the operator, so as to slide the lock and move the intermediate reduced portion of the arched member into engaging position with the gear to prevent its rotation or in an opposite direction to cause it to permit the gear to rotate.

In actual practice this look may be made of strap or sheet metal for the sake or cheapness; but we do not desire to limit ourselves to the character of the material employed.

Having thus described the invention, what we claim isl. The combination with a Window-frame and a sash sliding in said frame, of a rack fixed upon the frame, a gear mounted on the sash and meshing with the rack, and a combined locking device and guard for said gear comprising an arched sliding member spanning the gear and arranged for vertical movement on the sash, said sliding member being normally held by gravity in looking engagement with the gear.

2. The combination with a window-frame and a sliding sash, a rack on one of the members and a meshing gear on the other member, and means for locking the gear and rack against relative movement comprising an intermediately and terminally slotted member, a fastening device passing through the intermediate slot and the gear, and fastening devices passing through the terminal slots in the device.

3. The combination with a window-frame and a sliding sash, a rack on the frame and a gear on the sash, a sliding gear-lock carried by the sash and having an intermediate reour own we have hereto afiixed our signatures duced portlon near one end for engagement in the presence of two Witnesses.

With the gear, and fastening devices passing THOMAS H. LANDERS. through the lock and into the sash, and ter- WILLIAM N. JACKSON. 5 minally-bent portion carried by the lock to Witnesses:

provide a handle. 0. O. HOLMES,

In testimony that We claim the foregoing as A. B. JONES. 

